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Feliz [49]
2 years ago
13

“Find the missing side length of the right triangle, round to the nearest hundredth. EXPLAIN HOW YOU GOT YOUR ANSWER AND WHICH T

RIGONOMETRIC RATIO YOU USED.”

Mathematics
1 answer:
katrin2010 [14]2 years ago
7 0

Answer:

X=21.21

Step-by-step explanation:

Cos(45)=15\x

0.707=15\x

15\0.707 =x

X= 21.21

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A rectangle has a perimeter of 34 cm and an area of 52 cm2. its length is 5 more than twice its width. write and solve a system
Vsevolod [243]
Width=4cm
length=13cm

3 0
3 years ago
Complete the equation 3 x 18 = 3 x ____ x 9<br><br><br> Need answer ASAP
qwelly [4]

Answer:

2

Step-by-step explanation:

Since the 3's are the same on either side, you need to find a number that, when multiplied by 9, yields 18. The only number that satisfies that is 2, which is the answer. Hope this helps!

4 0
3 years ago
X = [?]<br> 5x - 5<br> 2x + 10
Ket [755]

Answer:

I thinks it’s 7x + 5

Step-by-step explanation:

7 0
3 years ago
Find two numbers whose sum is 25 and the sum of whose reciprocals is 1/6
Katen [24]

Answer:

10 and 15

Step-by-step explanation:

Let 'x' and 'y' are the numbers we need to find.

x + y = 25 (two numbers whose sum is 25)

(1/x) + (1/y) = 1/6 (the sum of whose reciprocals is 1/6)

The solutions of the this system of equations are the numbers we need to find.

x = 25 - y

1/(25 - y) + 1/y = 1/6 multiply both sides by 6(25-y)y

6y + 6(25-y) = (25-y)y

6y + 150 - 6y = 25y - (y^2)

y^2 - 25y + 150 = 0 quadratic equation has 2 solutions

y1 = 15

y2 = 10

Thus we have :

First solution: for y = 15, x = 25 - 15 = 10

Second solution: for y = 10, x = 25 - 10 = 15

The first and the second solution are in fact the same one solution we are looking for: the two numbers are 10 and 15 (since the combination 10 and 15 is the same as 15 and 10).

5 0
3 years ago
(12y2+17y-4)+9y2-13y+3)
Flura [38]
(12y^2+17y-4)+(9y^2-13y+3)=12y^2+9y^2+17y-13y-4+3=\\\\=21y^2+4y-1
7 0
3 years ago
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